1756-CN2RXT/B DCS/PLC控制自动化工控系统AB模块

1756-CN2RXT/B DCS/PLC控制自动化工控系统AB模块

1756-CN2RXT/B DCS/PLC控制自动化工控系统AB模块

1756-CN2RXT/B供应DCS/PLC控制自动化工控系统AB模块多选择界面PLC使用简单的图形人机界面。DCS的界面具有复杂的图形。逻辑PLC的开发是根据应用程序进行编程的。

DCS具有根据应用程序配置的内置控制功能。编程对于可编程逻辑控制器，各种高级编程语言可用于创建自定义逻辑。对于分布式控制系统，现有功能块可用于创建定制逻辑。冗余在PLC的情况下，冗余可能没有合理性。这是因为额外的硬件用于使PLC冗余，这使其更高。

DCS将冗余作为其默认功能体系结构PLC具有相对简单和灵活的体系结构。DCS系统的体系结构相对复杂和不太灵活。IO（输入-输出）容量PLC的IO处理能力较小，约为几百个IO。

DCS的IO处理容量大于PLC。大约有数千个IO。响应速度PLC的响应速度相对较高，即PLC通常可以在十分之一秒内对变化做出响应。DCS的响应速度较慢。对于分布式控制系统，典型的响应时间约为30ms。应用程序数据的存储对于PLC，应用程序数据存储在多个数据库中。

DCS的应用程序数据保存在单个数据库中。控制器数量PLC的控制器数量有限。DCS可以处理许多控制器。过程PLC以低水平的过程交互进行批量处理。DCS涉及相互关联的连续复杂过程。

1756-CN2RXT/B DCS/PLC控制自动化工控系统AB模块

1756-CN2RXT/B Supply DCS/PLC control automation industrial control system AB module multi-choice interface PLC uses a simple graphical man-machine interface. The DCS interface has complex graphics. The development of logic PLC is programmed according to the application.

DCS has built-in control functions configured according to the application. Programming For programmable logic controllers, various high-level programming languages are available to create custom logic. For distributed control systems, existing functional blocks can be used to create custom logic. Redundancy In the case of PLCS, redundancy may not be justified. This is because additional hardware is used to make the PLC redundant, which makes it higher.

DCS uses redundancy as its default function architecture PLCS have a relatively simple and flexible architecture. The architecture of DCS systems is relatively complex and less flexible. IO (input-output) capacity The IO processing capacity of PLC is small, about several hundred IO.

The I/O processing capacity of DCS is larger than that of PLC. There are about thousands of IO's. Response speed The response speed of PLCS is relatively high, that is, PLCS can usually respond to changes within one-tenth of a second. DCS is slow to respond. For distributed control systems, the typical response time is about 30ms. Storage of application data For PLCS, application data is stored in multiple databases.

DCS application data is stored in a single database. Number of controllers PLC has a limited number of controllers. DCS can handle many controllers. Process PLCS do batch processing with a low level of process interaction. DCS involves interconnected, continuous and complex processes.